Washable Reusable Catamenial Napkin Pad

ABSTRACT

A reusable washable catamenial napkin pad is formed from a lightweight oblong fabric sheath or casing which encloses an absorbent cushion and a fluid impermeable liner. The casing is made of a rectangle of cloth which has its long edges folded towards each other and attached only partially in the middle. Then the cushion and liner are slid inside the casing by the user, with the liner on the bottom, forming the pad. The pad is attached by safety pins or similar attachment device to an elastic belt. When the pad has been used and removed from the elastic belt, the three components, namely casing, cushion, and liner, are separated for washing.

CROSS-REFERENCE TO RELATED APPLICATIONS

Not Applicable

The following is a tabulation of some prior art that presently appears relevant.

U.S. Patents Patent Number Kind Code Issue Date Patentee 9,301,886 B2 Apr. 5, 2016 Fernandez, Dolores Rubio 9,024,108 B2 May 5, 2015 McManus, Marcia 7,090,666 B2 Aug. 15, 2006 Miskie, Mark 6,764,477 B1 Jul. 20, 2004 Chen, Fung-jou et al 5,429,627 A Jul. 4, 1995 Johnson, Stacey A. 5,356,402 A Oct. 18, 1994 Gillies, Suzanne et al 4,678,465 A Jul. 7, 1987 Avejic, Katarina 3,970,087 A Jul. 20, 1976 Castaneda, Rosa Maria 3,400,718 A Sep. 10, 1968 Saijo, Toshiko

U.S. Patent Application Publications Publication Nr. Kind Code Pub. Date Applicant 20160030255 A1 Feb. 4, 2016 Rescorl, Linda L. 20140114273 A1 Apr. 24, 2014 Sierra, Diana Beatriz 20040236298 A1 Nov. 25, 2004 Coates, Fredrica V.

Foreign Patent Documents App. or Foreign Doc. Nr. Cty. Code Kind Code Pub. Dt. Patentee 2011104328 JP A Jun. 2, 2011 Kubo, Tomoko 292464 GB A Aug. 1, 1929 Clapin, Emma Augustine

BACKGROUND OF THE INVENTION

Disposable catamenial products are not affordable in many regions of the world and most reusable catamenial products have drawbacks. In developing countries, girls and women continue to be ostracized and miss school and work when they are menstruating. There is a need for a simple, effective, inexpensive, reusable, and environmentally friendly catamenial product, which is easy to make. Even in countries whose inhabitants can pay the monetary cost of disposable catamenial products, there is a heavy environmental cost both from manufacturing the disposable products and their packaging, and from disposing of them after use. In addition to the monetary and environmental costs of disposable products, tampons specifically may pose health risks as chemical processing residues could be absorbed into the user's body through the internal vaginal membranes, which are known to be highly absorptive. Tampons may also exacerbate menstrual discomfort by virtue of being worn internally next to sensitive organs. For these and other reasons, reusable sanitary products are making a small comeback in developed countries, and social media sites are active in their advice and encouragement for those wanting to switch to reusable products.

PRIOR ART

Many existing reusable catamenial pads are constructed from layers which are attached, which makes the pads bulky and more difficult to thoroughly clean after use. Current designs are complex to construct, which makes them expensive to produce and discourages those people inclined to sew the pads themselves. Many are designed to attach to a specific form of undergarment, namely a panty with a crotch section of standard dimensions. What is needed is a simple yet secure and effective design that can be made from available fabrics and lining materials, that is easy to sew, easy to wash thoroughly, and doesn't require a specific form of undergarment.

U.S. Pat. No. 3,400,718, Sep. 10, 1968, Toshiko Saijo, teaches a sheath-like sanitary belt that encloses an absorbent layer, with an attached fluid impermeable layer This sanitary belt would not be easily adapted for users of different sizes and shapes and would be somewhat complex to sew The belt is not intended to be changed and washed as often as the absorbent layer, and yet it comes into direct contact with body fluids. An improvement to the U.S. Pat. No. 3,400,718 design would be a sheath that was simpler in construction and intended for frequent washing, along with “one size fits most” flexibility.

SUMMARY

A washable reusable catamenial pouch or sanitary napkin pad is formed from three pieces which are not attached, namely a casing, a cushion, and a liner. The casing is constructed from a single substantially rectangular or oblong piece of lightweight fabric such as muslin, about 17 inches long and five inches wide, with all edges hemmed or overlook stitched to prevent unraveling. The long ends of this oblong piece of lightweight fabric are folded towards each other and joined only for the middle four inches or so. This join forms the top of the casing. As used herein the term “top” means the direction facing the body of the user while the term “bottom” means the direction facing away from the body of the user. In this way an open ended, only partially closed sheath is constructed. The cushion is an absorptive cloth about seven inches long. Multiple cushions or cushion layers can be stacked to accommodate heavier menstrual flow or urinary incontinence. The liner is a strip of fluid impermeable material such as plastic or vinyl sheeting, or polyurethane laminate. To form the pad, the cushion is folded and placed on top of the liner and then both are slid to the middle of the casing with the liner on the bottom. Each of the short ends of the casing is overlapped and attached to an elastic belt with safety pins or similar attachment device. The elastic belt goes around the waist of the user and holds the pad securely against the user's body with the cushion at the vaginal opening to collect menstrual fluids. After use the pad is unpinned from the belt and its three component pieces are separated for washing.

Advantages

The current catamenial napkin pad comprises a sheath or casing made of a substantially rectangular piece of cloth, into which is inserted an absorptive cushion and an optional fluid impermeable liner. The sheath or casing is only partially closed, at about the middle of its length, which facilitates removal of the cushion and liner, for washing. The casing attaches to a strip of elastic worn as a belt. This design is inexpensive to produce. The front and the back are identical, which enhances simplicity. The design could also be used as a female urinary incontinence pad or a “mommy-pad” to absorb bodily fluids after childbirth. The design doesn't require much sewing skill and could be produced by hand sewing, a regular sewing machine, or an overlock serger sewing machine. The three components of the pad, namely the casing, the cushion, and the optional liner, could be sourced from either new or repurposed materials.

Compared to the sanitary belt of U.S. Pat. No. 3,400,718, where the casing is designed as part of the belt apparatus, the casing of the present design is part of the pad apparatus. The casing is simple and is intended to be laundered as frequently as the cushion, which is an hygienic improvement over U.S. Pat. No. 3,400,718. The current design is easily adapted for different body shapes and sizes as well as levels of menstrual flow. It requires a minimum of construction steps while still providing highly effective utility.

These and other benefits of one or more aspects will become apparent from a consideration of the ensuing description and accompanying drawings

DRAWINGS—FIGURES

FIG. 1 shows the three separate components of the device

FIG. 2 shows the device being assembled

FIG. 3 shows the device attached to an elastic belt and ready for use.

DRAWINGS—REFERENCE NUMERALS

1 casing

2 cushion

3 liner

4 casing join

5 freely overlapping ends

DETAILED DESCRIPTION

FIG. 1 illustrates the three component pieces of the pad, before they are assembled by the user. The casing 1 is constructed of a rectangular or nearly rectangular piece of lightweight cloth fabric whose long edges are connected to form the casing join 4, and the freely overlapping ends 5. The casing 1 is open at both ends and only partially joined in the middle to facilitate placement of the cushion 2 and liner 3, while still securing them sufficiently. The cushion 2 is made of soft absorbent material that is compressible, conformable, and non-irritating to the user's skin. The liner 3 is made of a sheet or strip of fluid impermeable substance such as plastic or vinyl sheeting, or polyurethane laminate

FIG. 2 illustrates the cushion 2 and the liner 3 being positioned inside the casing 1, with the cushion on top towards the user's body and the liner on the bottom away from the user's body. They are slid into the casing and held securely in place by the casing join 4. Assembly of these components prior to use is straightforward.

FIG. 3 illustrates the pad ready for use, with the freely overlapping ends 5 separately stacked and attached with safety pins to an elastic belt, which automatically creates tensioning that provides additional security against cushion 2 and liner 3 displacement. The casing 1 serves multiple functions. It passes fluid down into the cushion 2, it holds the cushion 2 and liner 3 together and in the proper position, it provides structural support, and it attaches the cushion 2 and liner 3 to the elastic belt. The casing also provides a comfortable interface between the liner and the user and helps to prevent any irritation caused by contact between the rough edges of the liner, and the user. The fit is customizable as the casing can be attached to the belt either closer to the casing join, or further away. Also, the belt can be of greater or lesser circumference for different sized users, and can be worn higher or lower on the user's waist to provide the optimal balance of comfort and security.

Conclusion, Ramifications, and Scope

There is a need for an inexpensive, effective, and environmentally friendly catamenial device that is easy to wash thoroughly and easy to sew. This catamenial pad, by its simplicity, lends itself to modification of the relative proportions of the components to achieve optimal utility and comfort for any particular user, depending on their body type, size, and menstrual flow pattern. For example the casing can be made wider to provide greater coverage against fluid leakage and greater stability against the user's body. Or it can be made narrower for less bulk and a more streamlined appearance and feel. The casing can be made longer for larger people or if the user wants the safety pin attachment to land higher on their body. It can also be modified to accommodate a heavier flow of liquid such as from urinary incontinence, by making the casing more capacious and adding layers of cushion. The fluid impermeable liner is optional. Ideally the casing and cushion are made of sustainable eco-friendly long wearing fabrics such as hemp, linen, and bamboo so they will last many years with minimal environmental impact. But poor people can also construct the pad design of repurposed cloth, to achieve the same utility. The description above contains many specificities but these should not be construed as limiting the scope of the embodiments. Instead the scope of the embodiments should be determined by the appended claims and their legal equivalents 

What is claimed is:
 1. A washable reusable catamenial pad comprising a casing, a cushion, and a liner: a. said casing comprising a rectangular or nearly rectangular casing cloth with two opposing casing long sides approximately 17 inches long and two opposing casing short sides approximately 5 inches long, whereby to create said casing, said casing long sides of said casing cloth are folded towards each other and permanently joined for approximately 4 inches, approximately at the middle of said casing long sides, creating a casing join, with the unattached portions of said casing long sides freely overlapping, b. said cushion comprising absorbent material approximately seven inches long and of predetermined width relative to said casing such that said cushion fits inside said casing either in a single layer or folded, c. said liner comprising fluid impermeable material such as plastic sheeting, vinyl sheeting, or polyurethane laminate, approximately seven inches long and of predetermined width such that said liner fits inside said casing in a single layer, whereby to assemble the pad before use, said cushion is placed on top of said liner, and both are inserted into said casing together and positioned such that said cushion is next to said casing join, and after use said casing, said cushion, and said liner are separated for washing.
 2. The catamenial pad of claim 1 wherein said casing cloth comprises non-woven fabric.
 3. The catamenial pad of claim 1 wherein said casing cloth comprises woven fabric.
 4. The catamenial pad of claim 1 wherein said casing long sides are joined using sewing.
 5. The catamenial pad of claim 1 wherein said casing long sides are joined using a non-sewing method.
 6. The catamenial pad of claim 1 wherein said cushion comprises woven cloth.
 7. The catamenial pad of claim 1 wherein said cushion comprises knitted cloth.
 8. The catamenial pad of claim 1 wherein said cushion comprises non-cloth material such as matted vegetable fiber or man-made fill.
 9. A washable reusable catamenial pad comprising a casing and a cushion: a. said casing comprising a rectangular or nearly rectangular casing cloth with two opposing casing long sides approximately 17 inches long and two opposing casing short sides approximately 5 inches long, whereby to create said casing, said casing long sides of said casing cloth are folded towards each other and permanently joined for approximately 4 inches, approximately at the middle of said casing long sides, creating a casing join, with the unattached portions of said casing long sides freely overlapping, b. said cushion comprising absorbent material approximately seven inches long and of predetermined width relative to said casing such that said cushion fits inside said casing either in a single layer or folded, whereby to assemble the pad before use, said cushion is inserted into said casing and positioned such that said cushion is next to said casing join, and after use said casing and said cushion are separated for washing.
 10. The catamenial pad of claim 9 wherein said casing cloth comprises non-woven fabric.
 11. The catamenial pad of claim 9 wherein said casing cloth comprises woven fabric.
 12. The catamenial pad of claim 9 wherein said casing long sides are joined using sewing.
 13. The catamenial pad of claim 9 wherein said casing long sides are joined using a non-sewing method.
 14. The catamenial pad of claim 9 wherein said cushion comprises woven cloth.
 15. The catamenial pad of claim 9 wherein said cushion comprises knitted cloth.
 16. The catamenial pad of claim 9 wherein said cushion comprises non-cloth material such as matted vegetable fiber or man-made fill. 